What is the function of each lymph organ?
organ in which macrophages
break down old blood cells and
bacteria or viruses
organ where lymphocytes are
synthesized, developed,
and matured
organ that acts as the first line of
defense in the nasal and oral cavity
organ where a special lymphocyle
that aids the immune system
is activated
spleen
thymus
red bone marrow

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Me brainliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula.5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects.8. describe the planets’ orbits around the sun.9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets.13. what causes the seasons?

Drag the tiles to the correct boxes to complete the pairs. match each cell organelle with its description.